8.8 November 12, 2013
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Top new questions this week:
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[Kernel inexplicably hangs if I define a pure function without
suppressing
output]\url{http://mathematica.stackexchange.com/questions/35629/kernel-ine
xplicably-hangs-if-i-define-a-pure-function-without-suppressing-output}
Save any unsaved work before trying as it may crash Mathematica and
other programs
In v9.0.1.0 on OSX 10.8.5, if I start a new session and define two
functions
f1P = Sin[#^Sin[Sqrt[Gamma[#]]]] ...
- asked by gpap (14 votes), answered by m_goldberg (4 votes)
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[Bug in
RepeatedNull?]\url{http://mathematica.stackexchange.com/questions/36850/bug
-in-repeatednull}
RepeatedNull appears to be buggy (version 8.0).
Define f as follows:
In[1]:= f@s:{h_@___...} := List @@@ s
f is intended to accept (possibly empty) List of non-atomic (possibly
empty) expressions ...
- asked by Akater (13 votes), answered by m_goldberg (5 votes)
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[Equivalent Nested Loop
Structure]\url{http://mathematica.stackexchange.com/questions/35560/equival
ent-nested-loop-structure}
Consider the following examples:
Flatten @ Table[ f[a, b, c], {a, 1, 3}, {b, 1, 3}, {c, 1, 3}] ==
f @@@ Tuples[ Range[3], 3]
Flatten @ Table[ If[ a != b != c, f[a, b, c], Unevaluated[]],
...
- asked by expression (12 votes), answered by Ray Koopman (2 votes)
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[Finding the volume of a sphere using the Monte Carlo
algorithm]\url{http://mathematica.stackexchange.com/questions/35683/finding
-the-volume-of-a-sphere-using-the-monte-carlo-algorithm}
I used the following code to find the volume of the sphere $x^2+y^2+z^2
= 1$ in the first octant:
McVolume[Num_] :=
Module[{hit, miss, index, x, y, z}, hit = 0; miss = 0;
For[index = 1, index ...
- asked by johny (12 votes), answered by Szabolcs (15 votes)
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[Making code version
aware]\url{http://mathematica.stackexchange.com/questions/36806/making-code
-version-aware}
Mathics, a free Mathematica-compatible project has been recently
launched. It provides a subset of the functions and capabilities of
Mathematica at a slower pace.
This opens us the tantalizing ...
- asked by magma (11 votes), answered by magma (5 votes)
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[Partitioning a list of numbers the Mathematica
way]\url{http://mathematica.stackexchange.com/questions/36867/partitioning-
a-list-of-numbers-the-mathematica-way}
I have two sorted lists, one list will be called the "fences" and the
other the "values"
Fences could be: $\{1, 5, 9, 14\}$
Values could be $\{-1, 1, 3, 4, 6, 9, 10, 13, 14, 15\}$
I want to ...
- asked by muzzlator (10 votes), answered by Ray Koopman (18 votes)
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[Any way to make my equations look better, more Latex
like?]\url{http://mathematica.stackexchange.com/questions/36697/any-way-to-
make-my-equations-look-better-more-latex-like}
I find that the equations I write in Mathematica are not always
publication quality. Here is a typical example:
If I copy as Latex, then I get the following code:
\frac{\sum _{i=1}^N \frac{(k|k) ...
- asked by Tyler Durden (9 votes), answered by Mike Honeychurch (9
votes)
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Greatest hits from previous weeks:
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[How to manipulate 2D
plots?]\url{http://mathematica.stackexchange.com/questions/7142/how-to-mani
pulate-2d-plots}
When it comes to visual analysis, large datasets or data with intricate
internal details often makes plotting in 2D useless, as the outcome is
either just a fraction of the full dataset, or no details ...
- asked by Istvan Zachar (58 votes), answered by Istvan Zachar (56
votes)
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[Programmatic approach to HDR photography with Mathematica image
processing
functions]\url{http://mathematica.stackexchange.com/questions/9342/programm
atic-approach-to-hdr-photography-with-mathematica-image-processing-funct
> }
The High dynamic range imaging (HDR or HDRI) direction in photography
and image processing became very popular recently. Besides obvious photo
art applications (see examples), there are many great ...
- asked by Vitaliy Kaurov (44 votes), answered by Simon Woods (30 votes)
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Can you answer these?
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[How can I set constraints on parameters in NelderMeadMinimize
package?]\url{http://mathematica.stackexchange.com/questions/35651/how-can-
i-set-constraints-on-parameters-in-neldermeadminimize-package}
I read about NelderMeadMinimize package. How can I set constraints on
the parameters? For example I want to minimize an equation with 10
parameters such as {a1, a2, ....}. I want to put the condition ...
- asked by Soodeh Z. (1 vote)
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[WhenEvent method with 3
conditions]\url{http://mathematica.stackexchange.com/questions/36869/whenev
ent-method-with-3-conditions}
I am trying to solve system of differential equations below
$x''(t)=-2.25cos(1.5t)-x(t)-x'(t)$
$y''(t)=-1.125cos(1.5t)-4y(t)-y'(t)$
for $x>(1+y)$ then $z'(t)=x(t)-(1+y(t))$
for $|x|<(1+y)$ ...
- asked by Dadan Ari Wibowo (1 vote)
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[Caching data in Mathematica
package]\url{http://mathematica.stackexchange.com/questions/36875/caching-d
ata-in-mathematica-package}
Consider the following:
m=Quantity[1,"meter"]
If I run the package, it will return 1m
But when I load the package, the package is re-evaluated meaning, that
internet i required.
Is it possible to ...
- asked by OskarNS (1 vote)